Dough-break.



PATENTED MAR. 8, 1904.

W. H. SCOTT.

DOUGH BREAK.

APPLICATION rum 00124, 1906.

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DOUGH BREAK.

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DOUGH BREAK.

APPLIOATION FILED 00124, 1903.

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PATENTED MAR. 23, 19 04. W. H. SCOTT. DOUGH BREAK. APPLICATION FILED001224, 1903,

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UNITED STATES Patented. March 8, 1904.

PATENT OFFICE.

WILLIAM H. SOOTT, OF ST. LOUIS, MISSOURI, ASSIGNOR OF TWO-THIRDS TO S.L. G. HYDE AND FREDERICK FREUND, OF ST. LOUIS, MISSOURI.

DOUGH-BREAK.

SPECIFICATION forming part of Letters Patent No. 754,096, dated March 8,1904.

' Application filed October 24, 1903. Serial No. 178,397. (No model.)

To all whom it may concern: 7

Be it known that I, WVILLIAM H. SCOTT, a citizen of the United States,residing at St. Louis, Missouri, have invented a certainnew and usefulImprovement in Dough-Breaks, of which the following is a full, clear,and exact description, such as will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1 is a side elevational view of my improved doughbreak. Fig. 2 isa vertical sectional View thereof. I Fig. 3 is a top plan view. Fig. 4is a detail view, partly in section, of one of the tray-supports. Fig. 5is a top plan view, partly broken away, showing the manner of rotatingthe tray on its support. Fig. 6 is a detail View of the endless chain.Fig. 7 is a detail View of mechanism for controlling the travel of thetrays, depending upon the presence or absence of the dough in thebreaking-rolls. Fig. 8 is a sectional view of the same. Fig. 9 is a topplan View of a' portion of said mechanism. Fig. 10 is a detail view ofthe clutch-operating lever, and Fig. 11 is a side elevational Viewshowing said lever in operative position.

This invention relates to a new and useful improvement in dough-breaksforuse in bakeries. The dough after being made and Weighed is placed onthe traveling trays, which trays are carried by endless chains. Thesetrays are moved into dumping and receiving positions by appropriatemechanism. In approaching the dumping position the tray is given aquarter-turn and the dough is dumped between the break-rolls, and afterpassing through the break-rolls the dough is folded over onto areceiving-tray, which receiving-tray is then carried onward in thecircuit. In the machine shown there are nine trays, five of whichcontain dough, while two of the remaining trays are in operativeposition, one dumping a batch of dough and the other receiving thedough, the two remaining trays being idle during this operation.

Means are provided for automatically throwing the mechanism which drivesthe endless chain out of gear when the break-rolls are acting upon thedough, and in this manner the trays remain stationary during the periodthat the dough is passing through the breakrolls, and the instant thedough leaves the break-rolls the endless chains start on their travel tomove and now turn to discharge another load onto the break-rolls, and anempty tray comes into position beneath the breakrolls to receive thedough as it passes through the break-rolls.

My invention consists in the novel construction, arrangement, andcombination of the several parts, all as will hereinafter be d escribed,and afterward pointed out in the claims.

In the drawings, 1 indicates the side framing of the machine, preferablyin the form of castings, in which are provided the bearings for theseveral moving parts. a

I will first describe the construction of the endless chain, the trayscarried thereby, and

the means for giving a quarter-turn to each tray as it approaches itsdumping position.

Referring to Fig. 2,mutilated chain-sprocket wheels 2 are mounted onshafts in the side framing, there being two pairs of said mutilatedsprockets at the lower portion of the castat intervals for the receptionof castings 4E,

(see Fig. 6,) which provide bearings for arockshaft 5, extending fromone chain to the other. This rock-shaft has a bearing in its center (seeFig. 4) for the reception of a pivot-stud 6, extending from the underside of the tray 7. r f

This tray preferably has two of its side edges slightly bent or curvedin an upward direction. A spring-pressed pin 8 is mounted in therock-shaft 5 and cooperates with depressions or openings 9 in the bottomof the tray 7,

whereby when the tray is moved from one of its positions to another itwill be held in its new position against accidental displacement.

The lower end of the pivot-stud 6 carries a crank-arm 11, Whose rollercooperates with a cam-groove 12, arranged in the upper face of a bracket13, mounted in position in the frame. By this construction it will beobvious that as the trays pass the cam-groove the crank-arm 11 willenter said groove, and as its roller approaches the high part of thegroove it will force the tray to make a quarter-turn, which may bedesignated as the .dumping position of the tray, and then by passingthrough the remaining portion of the groove the crank-arm will restorethe tray to its original position, where it is held by pin 8. In thisconnection it will be observed that the roller on the crank-arm 11 ismoved to a position to again enter the groove 12 after making anothercircuit.

The means for tilting the trays when in dumping position and formaintaining said trays in a horizontal position during the time they areloaded comprises crank-arms 1 1 and 15, arranged on the ends of therock-shaftsS. These arms are preferably arranged at right angles to eachother in the form of a bellcrank lever and are provided with rollers attheir extremities which enter grooves in a cam-track 16, extendingaround the entire circuit. It will be observed by referring to Fig. 2,starting from ,the receiving position wherein the tray is located underthe breakrolls, that the downward movement of said tray will necessitatethe crossing of the grooves in the track-plate 16 in order to maintainthe tray in a horizontal position. This position is maintainedthroughout the circuit until the tray approaches the upper portion ofthe machine, when the cam-grooves again cross and are so related that asthe tray is given a quarter-turn because of the cooperation of thecrank-arm 11. and cam-groove 12 the cranks 14c and 15 will rock theshaft 5, causing it to tilt its carried tray, as shown in Fig. 2. Whenthe tray is restored to its normal position rotatably, the continueddownward movement will, because of the relation of the grooves in plate16, cause the tray to keep substantially a vertical position, becausethe tray in this position is idle, and as the tray is brought beneaththe breakrolls it is again made to assume a horizontal position toreceive the dough coming from the break-rolls.

In order to take up any slack in the endless chains which might resultfrom wear or other causes, I adjustably mount the cam-plates 16 and 16at the lower portion of the machine by elongating the openings throughwhich the securing-bolts pass, and in order to aline thehorizontally-adjusted section 16 with a vertically-disposed section 16 Ipivot the latter section at 16, so as to maintain the relation of theupper ends of these grooves with the fixed section 16 the lower portionof 16 being adjustable to aline these grooves with thehorizontally-adjusted section 16".

The bearings of the sprocket-wheels over which the endless chains passare also made adjustable for obvious reasons. The dough discharged fromthe tilted tray in its dumping position is received into a hopper 17,whence it is delivered between the break-rolls 18. These break-rolls aredriven by appropriate gearing, as follows: 19 indicates a drive-shaft onwhich is arranged a driving-pulley 20. This shaft carries pinions 21 anda balance wheel 22. Pinions 21 mesh with gears 23, arranged on the endsof the shaft, upon which one of the break-rolls 18 is mounted, whichshaft carries pinions 2 1, meshing with pinions 25 on the shaft of theother break-roll, whereby the other break-roll is rotated in theopposite direction.

In order to fold the dough, which issues in sheet form from between thebreak-rolls, I arrange an oscillating folder 26 under the breakrolls,(see Fig. 2,) which folder is mounted on swinging arms, preferablypivoted to brackets extending from the side framing. A link 27 isconnected to one of these pivoted arms, which link terminates in aneccentric-strap arranged upon an eccentric fixed to a short shaftjournaled in a bearing on the side framing, which shaft is driven by agear 28, meshing with a pinion 29 on the shaft of one of thebreak-rolls. v

It is obvious that dough dumped onto the break-rolls will consume sometime in passing therethrough, and, further, that the receiving tray mustremain stationary under the breakrolls until the batch of dough undertreatment by the rolls has entirely passed through the rolls. Variousmeans may be employed for controlling the travel of the trays dependingupon the presence or absence of dough in the break-rolls, and I haveshown one form of mechanism for automatically accomplishing this, whichmechanism depends for its action upon the resistance encountered by thebreakrolls in acting upon a batch of dough passing therethrough. Byreferring to Figs. 7 and 8 it will be seen that the driving-pulley 20 isloosely mounted on ahub 30 of an internal gear 31. Lugs 32 and 33 arearranged, respectively, on the inner periphery of the pulley 20 and theouter periphery of the internal gear 31, be-

tween which lugs is arranged a compressionspring 3 1. The strength ofthis spring is such that when there is no dough between the breakrollsthe lugs 32 and 33 are kept their greatest distance apart; but theinstant that dough is introduced between the break-rolls the resistanceencountered by the rolls imposes a load on the spring, which causes thelugs to approach each other. This yielding drive and the lost motionresulting from the circumferential advance of the driving-pulley withrespect to the internal gear when the break-rolls also a pinion 38,loosely mounted on the shaft 19. Starting from the position shown inFig. 7 if dough is introduced between the breakrolls the spring 34 willbe compressed, causing the driving-pulley to advance with respect to theinternal gear, and this advance rotates the pinion 37 in the directionof the arrow, said rotation being communicated to the pinion 38 in thedirection of the arrow. The hub of pinion 38 has its end formed withcam-faces, which cooperate with corresponding cam-faces formed on theend of a sleeve 39, feathered on shaft 19 and movable longitudinallysaid shaft. Sleeve 39 cooperates with a headed bar 40, which bar has itsouter. end formed non-circular and which non-circular portion is guidedin a block 41. This sliding bar has a rock-arm 42 connected thereto,(see Fig. 3,) said rock-arm being mounted on a shaft 43,

whose lower end carries a rock-arm 44. Rockarm 44 is connected to oneend of lever 45, the other end of said lever 45 being provided with ashoulder 46, (see Fig. 9,) which shoulder cooperates with a pivoted dog47, mounted upon a sliding block 48. A spring 49 tends to hold the dogdown against the end of lever to a lever 51, which lever has a bevelededge 52, normally held in a clutch-groove by means of a spring 53.

54 indicates the driven member of a clutch, which is in the form of acollar, having a circumferential groove for the reception of the lever52. This collar is keyed to the shaft 55, which shaft also has keyedthereon a pinion 56, in mesh with the gear 57 on a shaft 58, carryingthe pair of sprocket-wheels 2 at the upper portion of the machine.

59 indicates a gear loosely mounted on shaft 55 and which is in meshwith a pinion 60, whose conjoined gear 61 is in mesh With the pinion 21.In this way gear 59 is constantly driven and forms the driving member ofthe clutch. The hub of gear 59 (see Fig. 9) is provided with a series ofopenings 62, in which is designed to be received the end of a slidingbar 63, said bar being pressed into one of the openings 62 by means of aspring 64. This bar traverses the circumferential groove in the drivenmember of the clutch or collar 54, as it has been called, and said baris provided with a recess 65, which cooperates with the beveled face 52of the lever 51.

The operation of the mechanism just above described is as follows: Whenthe driving-pulley advances with respect to the internal gear 31, thegear 38 is rotated and through its cam-face forces collar 39 outwardlyon shaft 19. This motion through the rock-arms 42 and 44, which areconnected by the shaft 43, rocks the lever 45. When the dough passes thebreakrolls and the spring 34 separates the lugs 32 and 33, the gears 37and 38 will be reversely rotated to cause the collar 39 to slideinwardly on the shaft, this motion resulting from the action of a spring66, connected to the rockarm 44. This restoration of the parts abovedescribed will cause the lever to move from its dotted position to theposition in full lines,

and this movement will force the dog 47 and its sliding block 48forwardly, so as to move the lever 51 out of its groove and permit theclutch-bolt 63 to lock the driving and driven members of the clutch.When the clutch becomes locked,the trays will be caused to travel.During this travel and immediately after the lever 51 has permitted theclutch to move into an operative position the end of dog 47 engages theinclined face and moves the dog out of engagement with the shoulder onlever 45. Spring 53 now asserts itself and restores .the' upper end ofthe lever 51 into position in its groove. In assuming thisposition,which is the normal positionof lever 51, the clutchbolt will beoperated after having made one revolution, which revolution issufficient to advance the trays the distance of one step in theirprogress. In this manner it will be seen that the machine is entirelyautomatic, that the batch of dough is given a quarter-turn just beforeit is dumped onto the break-rolls, that the resistance offered by thedough to the movement of the break-rolls controls the travel of thechains, and that the presence of the dough in the break-rolls causes thetrays to be arrested,and the absence of the dough causes the trays to beadvanced one step.

In Fig. 1 I have shown a link 48*, connected to the sliding block 48 andto an operatinghandle 48". By this means the clutch can be manuallyoperated and permit the trays to travel. In operating the'clutch by handit is obvious that if it is desired to arrest the next tray in its neXtposition the handle will have to be released to permit the lever 51 tooccupy its normal position in the annular groove of the collar.

As it is necessary to use flour on the pans to prevent the dough fromsticking, it is obvious that this flour can be dusted on the pans byhand or, if desired, a cluster can be so arranged with respect to thepans that the flour will be dusted thereon. I have not deemed itnecessary to show any mechanism for dusting the pans, as this forms nopart of my invention.

I am aware that minor changes in the construction, arrangement, andcombination of the several parts of my device can be made andsubstituted for those herein shown and described without in the leastdeparting from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is

1. In a dough-break, the combination with break-rolls, of an endlesschain, trays carried by said chain, and means for tilting said trays todump the dough onto the break-rolls; substantially as described.

2. In a dough-break, the combination with break-rolls, of an endlesschain, trays carried by said chain, and means for partially rotatingsaid trays when in the dumping position over thebreak-rolls;substantially as described.

3. In a dough-break, the combination with break-rolls, of an endlesschain carrying rockshafts, trays pivotally mounted on said rockshafts,means for rocking said shafts to tilt the trays to a dumping position,and means for rotating said trays as they approach their dumpingpositiomsubstantially as described.

4. In a dough-break, the combination with break-rolls, of endless chainspassing over sprockets, rock-shafts carried by said chains, crank-armson the ends of said shafts, and continuous cam-grooves cooperating withsaid crank-arms to rock the shafts and tilt the trays; substantially asdescribed.

5. In a dough-break, the combination with break-rolls, of endlesschains, trays carried by said chains, and means for holding said traysin a horizontal position from the time they leave a point under thebreak-rolls up to the time that said trays reach a point above saidbreak-rolls,when said means tilt said trays to a dumping position;substantially as described.

6. In a dough-break, the combination with break-rolls, of endlesschains, trays carried by said chains, means for holding said trays in ahorizontal position from the time they leave a point under thebreak-rolls up to the time they reach a point above saidbreak-rolls,said means tilting said trays to a dumping position whenabove the break-rolls, and other means for operating said trays in theirdumping position for imparting a partial rotation thereto; substantiallyas described.

7 In a dough-break, the combination with break-rolls, of traveling traysdesigned to move into and out of position above and below saidbreak-rolls, means for tilting said trays to dump the dough onto thebreak-rolls when said trays are above said breakrolls,and means forfolding the dough onto the receiving-tray under the break-rolls;substantially as described.

8. In a dough-break, the combination of traveling trays with means fortilting said trays when at a point above the break-rolls, means forpartially rotating said trays when approaching a dumping position, andmeans for folding the dough onto the receiving-tray under thebreak-rolls; substantially as described.

9. In a dough-break, the combination with break-rolls, of travelingtrays whose path of movement is above and below said break-rolls, meansfor tilting and partially rotating said trays at a point above thebreak-rolls, said means restoring said trays to normal horizontalposition and maintaining said horizontal position throughout theircircuit,and a springpressed pin cooperating with the trays to yieldinglyhold them against accidental displacement; substantially as described.

10. In a dough-break, the combination with breaki'olls, of endlesschains, whose links at intervals are replaced by bearings, rock-shaftsmounted in said bearings, crank-arms on the ends of said rock-shaftsoperating in continuous grooves in cam-plates, a tray pivotally mountedupon said rock-shaft, means for holding said tray in rotatably-adjustedposition, and means for partially rotating said trays; substantially asdescribed.

11. In a dough-break, the combination with side frame-castings ofbreak-rolls mounted therein, sprocket wheels mounted in saidframe-plates, endless chains passing over and under saidsprocket-wheels, rock-shafts carried by said endless chains, trays onsaid rockshafts, crank-arms on the ends of said shafts, said crank-armshaving cam-rollers at their ends, a sectional cam-plate havingcontinuous cam-grooves for cooperating with said rollers, and means foradjusting certain of the sections of said cam-plate; substantially asdescribed.

12. In a dough-break, the combination with side frame-castings, ofbreak-rolls, endless chains carrying rock-shafts, crank-arms on saidrock-shafts, and a cam-plate comprising a fixed section 16horizontally-adjustable sections 16 and 16 and a swinging section 16,all of said sections being provided with camgrooves for receivingrollers on the ends of said crank-arms; substantially as described.

13. In a dough-break, the combination with break-rolls, of travelingtrays adapted to discharge a batch of dough onto the break-rolls andreceive the dough from the break-rolls, and automatic means forarresting the travel of the trays during the time that a batch of doughis passing through the break-rolls; substantially as described.

14. In a dough-break, the combination with break-rolls, of travelingtrays adapted to discharge a batch of dough onto the break-rolls andreceive the dough from the breakrolls, and means operated by theresistance encountered by the break-rolls acting upon the dough forcausing the arrest of the trays during the time that dough is passingthrough the breakrolls; substantially as described.

15. In a dough-break, the combination with break-rolls, of trays adaptedto travel above and below said break-rolls, means for tilting said traysto discharge a batch of dough onto the break-rolls, means for partiallyrotating said trays as they approach a dumping position, means forfolding the dough as it issues from between the break-rolls onto thereceiving-tray, and means operated by the resistance to the movement ofthe break-rolls in acting upon the dough for causing the arrest of saidtrays during the time that the break-rolls are acting upon the dough;substantially as described.

16. In a dough-break, the combination with break-rolls, of trays adaptedto travel above and below said break-rolls, one tray discharging a batchof dough onto the break-rolls and another tray receiving said dough asit issues from the break-rolls, and automatic means set in operationwhen the batch of dough passes through the break-rolls for causing thetravel of the trays; substantially as described.

17. In a dough-break, the combination with break-rolls, of travelingtrays for discharging a batch of dough onto said break-rolls andreceiving the dough as it issues from said breakrolls, and automaticmechanism set in operation when the break-rolls have finished actingupon a batch of dough for causing the trays to be advanced one step;substantially as described.

18. In a dougli-break, the combination with constantly drivenbreak-rolls, of traveling trays adapted to discharge a batch of doughonto the break-rolls and receive the dough from said break-rolls,driving mechanism for the trays, a clutch for rendering said drivingmechanism effective, and automatic means operated by the break-rollswhen acting on a batch of dough for throwing said clutch out ofoperative position; substantially as described.

19. In a dough-break, the combination with constantly-drivenbreak-rolls, of traveling trays cooperating therewith, driving mechanismfor said trays, a clutch for rendering said driving mechanism operative,and means ac tuated by the break-rolls when acting upon a batch of doughfor operating said clutch to throw the same into operative position whena batch of dough has passed through the break-rolls, said clutch beingautomatically thrown out of gear after moving the trays a predetermineddistance; substantially as described.

20. In a dough-break, the combination with break-rolls, of means forconstantly driving the same, trays cooperating with said rolls, andmeans for automatically driving said trays a predetermined distance,said driving means being controlled by the resistance encountered by thebreak-rolls in acting upon a batch of dough; substantially as described.

21. In a dough-break, the combination with break-rolls, of means forconstantly driving the same, said means including a shaft, an internalgear mounted on said shaft, a drivingpulley having a yielding connectionwith said internal gear, and a clutch which is thrown into and out ofoperative position by the shaft, a driving-pulley loosely mounted onsaid shaft, and driving the same through the interposition of a yieldingmedium, trays cooperating with the break-rolls, driving mechanism forsaid trays, and means for throwing said tray-driving mechanism into andout of gear, said means being controlled by the relation between theinternal gear and drivingpulley; substantially as described.

23. In a dough-break, the combination with break-rolls, of drivingmechanism therefor including the shaft, an internal gear fixed on saidshaft, a driving-pulley loosely mounted on said shaft, and driving thesame through the interposition of a yielding medium, a collar slidinglymounted on said shaft, and means for sliding said collar along the shaftwhen the driving-pulley is displaced with respect to the internal gear,trays cooperating with the break-rolls, driving mechanism for saidtrays, and means for throwing said tray -driving mechanism into and outof gear, said means being controlled by the position of the slidingcollar on the shaft; substantially as described.

24. In a dough-break, the combination with break-rolls, of trayscooperating therewith, means for constantly driving the break-rolls,means for intermittently driving trays, said last-mentioned meansincluding the drivingpulley, gearing yieldingly connected with thedriving-pulley, collars slidingly mounted on the shaft and movable inone direction when the gearing is operated a certainway, a spring of.dough onto said break-rolls and receiving the dough as it issues fromsaid break-rolls, driving mechanism for the trays, a clutch for throwingsaid driving mechanism into an d out of gear, and means forautomatically operating said clutch; substantially as described.

26. In a dough-break, the combination with break-rolls, of trayscooperating therewith, means for driving said trays, a clutch forthrowing said driving mechanism into and out of gear, a lever fornormally holding said clutch in operative position, and means forvibrating said lever; substantially as described. 27 In a dough-break,the combination with break-rolls and their driving mechanism, of traysand their driving mechanism, a clutch for throwing the tray-drivingmechanism into and out of operation, a lever cooperating with saidclutch, a sliding block for moving said lever, a tripping-dog on saidsliding block, a lever cooperating with said dog, and means foroperating said last-mentioned lever, Which means are controlled by theresistance encountered by the break-rolls acting upon a batch of dough;substantially as described.

28. In a dough-break, the combination with break-rolls and their drivingmechanism, of trays and their driving mechanism, a clutch for renderingthe tray-driving mechanism operative or inoperative, a lever fornormally holding said clutch in an inoperative position, a sliding blockfor operating said lever, a dog carried by said block, means fortripping said WILLIAM H. SCOTT.

Witnesses: GEORGE BAKEWELL,

LENORE WILSON.

